Polymeric orthotic devices and method of formation

Abstract

A preform for use in forming orthotic devices which have a memory in the original preform shape. The preform is preferably formed into a final body shape which retains a memory of the original preform shape.

What is claimed is: 
     
       1. A method of forming an orthotic device comprising, selecting a polymeric material preform having a first, non-planar orthotic shape and having a memory imparted to said preform, said preform being selected to be molded over a predetermined body area of larger configuration than said first orthotic shape,   molding said preform to conform to said body area under conditions which retain said memory,   wherein said preform being formed by a molding step and processed to provide a memory in said preform in a first shape when said orthotic device is stretched form said first shape,   and stretching said preform from said first shape to mold said preform to said body.   
     
     
       2. A method in accordance with claim 1, wherein said molding is carried out by stretching and heating below a temperature which would cause loss of said memory. 
     
     
       3. A method in accordance with claim 2, wherein said preform is crosslinked to impart memory prior to said molding step. 
     
     
       4. A product according to the method of claim 3. 
     
     
       5. A method in accordance with the method of claim 1, wherein said processing is carried out by cross-linking of the polymeric material of said preform. 
     
     
       6. A product according to the method of claim 1.